• Title/Summary/Keyword: bases

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Consistency and Completeness Checking of Rule Bases Using Pr/T Nets (Pr/T네트를 이용한 규칙베이스의 일관성과 완전성 검사)

  • 조상엽
    • Journal of Internet Computing and Services
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    • v.3 no.1
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    • pp.51-59
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    • 2002
  • The conventional procedure to verify rule bases are corresponding to the propositional logic-level knowledge representation. Building knowledge bases, in real applications, we utilize the predicate logic-level rules. In this paper, we present a verification algorithm of rule bases using Pr/T nets which represent the predicate logic-level rules naturally.

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승용차유통경로에서 딜러의 협력, 갈등, 성과 간의 관계에 관한 연구

  • 계도원
    • Journal of Distribution Research
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    • v.1 no.1
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    • pp.109-127
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    • 1996
  • The purpose of this study was to represent hypotheses of the interrelationship of the level of cooperation, conflict, and performance and to report the findings testing the hypotheses in car channels. This study provides some general guidance toward better cooperation, conflict, and performance management. The results indicate that noncoercive bases of power and dependence hale a positive effect on cooperation, while the proposed inverse relationship between coercive bases of power and cooperation is not statistically significant. Coercive bases of power have a positive effect on conflict, while conflict is not statistically significant for noncoercive bases of power, dependence, and cooperation. Finally, cooperation has a positive effect on dealer performance, but conflict has a negative effect on dealer performance.

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Quality Characteristics of Yukwa Bases with Different Quantities of Soju in Storage (소주 첨가비율에 따른 유과바탕의 저장 중 품질 특성)

  • Kim, Ji-Youn;Shim, Ki-Hoon;Choi, Ok-Ja
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.41 no.7
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    • pp.988-993
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    • 2012
  • The objective of this study was to investigate the physicochemical properties of Yukwa bases with different quantities of Soju during long-term storage. We examined Yukwa bases with 5 different quantities (0%, 25%, 50%, 75%, and 100%) (v/w) of Soju after intervals of 10 days up to 50 days at $30{\pm}1^{\circ}C$. The L and a values of all Yukwa bases decreased as storage time increased. The b value of Yukwa bases with 0% Soju increased as storage time increased, but Yukwa bases with 25~100% Soju decreased. The compression and shared force decreased as storage time increased for all subjects, but those with bases of 50% and 75% Soju changed less during storage. The acid values of all Yukwa bases increased significantly during storage. In addition, the peroxide values of all Yukwa bases significantly increased during storage time. Yukwa bases with 0% Soju showed great change of the peroxide value during long-term storage. The peroxide values of all Yukwa bases changed less as the quantity of Soju increased.

Automatic Extraction of Image Bases Based on Non-Negative Matrix Factorization for Visual Stimuli Reconstruction (시각 자극 복원을 위한 비음수 행렬 분해 기반의 영상 기저 자동 추출)

  • Cho, Sung-Sik;Park, Young-Myo;Lee, Seong-Whan
    • Korean Journal of Cognitive Science
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    • v.22 no.4
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    • pp.347-364
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    • 2011
  • In this paper, we propose a automatic image bases extraction method for visual image reconstruction from brain activity using Non-negative Matrix Factorization (NMF). Image bases are basic elements to construct and present a visual image. Previous method used brain activity that evoked by predefined 361 image bases of four different sizes: $1{\times}1$, $2{\times}1$, $1{\times}2$, $2{\times}2$, and $2{\times}2$. Then the visual stimuli were reconstructed by linear combination of all the results from these image bases. While the previous method used 361 predefined image bases, the proposed method automatically extracts image bases which represent the image data efficiently. From the experiments, we found that the proposed method reconstructs the visual stimuli better than the previous method.

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Effect of Suppository Bases on Absorption of Lithium Carbonate (좌제기제가 탄산리튬의 흡수에 미치는 영향)

  • Kim, Yong-Hyun
    • Journal of Pharmaceutical Investigation
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    • v.16 no.4
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    • pp.148-151
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    • 1986
  • This paper was designed to investigate the influence of different suppository bases on both the rectal absorption and dissolution rate of lithium carbonate, and to compare bioavailability from rectal administration with that from oral administration. The dissolution rates were in such order as PEG 4000, surfactant A (Witepsol 15+sodium lauryl sulfate), surfactant B (Witepsol 15+cholic acid), Witepsol 15 and cacao butter. Among various suppository bases, the blood level of lithium carbonate after rectal administration was increased in the following order: surfactant A>surfactant B>PEG 4000>Witepsol 15>cacao butter. When it comes to compare oral with rectal administration in AUC values, surfactants and PEG 4000 showed similar blood levels to oral administration, but lipophilic bases such as Witepsol 15 and cacao butter showed far lower blood level than oral administration. Peak time in oral administration was 2 hrs, but those in rectal administration using various suppository bases were $6{\sim}8$ hrs.

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The Electronic Structure of Interaction Platinum(Ⅱ) with DNA bases, Adenine, Guanine, and Cytosine (Platinum(Ⅱ) Complex와 DNA bases인 Adenine, Guanine 그리고 Cytosine의 Interaction에 대한 전자구조)

  • Kim, Ui Rak;Kim, Sang Hae;Edward A. Boudreaux
    • Journal of the Korean Chemical Society
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    • v.34 no.6
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    • pp.539-547
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    • 1990
  • Molecular Orbital calculations using the SC-MEH method have been carried out for the interaction of Adenine, Guanine and Cytosine as DNA base and diaminecytosineplatinum(DCP) in various conformations. The results showed that the order of DCP binding to the DNA bases was guanine > adenine > cytosine and the stabilization energy of cis-isomer was larger than that of trans-isomer in the adenine-DCP complexes system. Furthermore, platinum(II) binding to DNA bases markedly gives rise to change of atomic charge in DNA bases ring, which can explain anti-tumor activity of platinum complex.

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Ultrasonic Cleaning이 Resin 의치상의 안정에 미치는 영향에 관한 실험적 연구

  • Lee, Han-Moo
    • The Journal of the Korean dental association
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    • v.12 no.1
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    • pp.37-42
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    • 1974
  • To ascertain if the ultrasonic cleaning technique caused any dimensional changes in heat and cold curing and fluid resin denture bases and in addition to evaluate the dimensional changes of the resin denture bases stored in water and air, the author measured the distance between the outsides of two pins embedded in methyl methacrylate test denture bases by mean of 12 inch vernier caliper, accurate to 0.02mm. The results were as follows; (1) Ultrasonic cleaning didn't cause any permanent dimensional changes, but only affected temporary dimensional expansion in 16 test denture bases. (2) Temporary expansion rate caused by 10 minutes' ultrasonic cleaning was 0.29% and at the maximal temperature of the cleaning solution it was 0.64%. (3) The half of the denture bases stored in water showed the dimensional expansion rate of 0.47% while the others stored in air showed the dimensional shrinkage rate of 0.15% after 4 months.

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Structural performance of cold-formed steel column bases with bolted moment connections

  • Chung, K.F.;Yu, W.K.;Wang, A.J.
    • Steel and Composite Structures
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    • v.5 no.4
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    • pp.325-340
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    • 2005
  • This paper presents a thorough investigation into the structural performance of cold-formed steel column bases using double lipped C sections with bolted moment connections. A total of four column base tests with different connection configurations were carried out, and it was found that section failure under combined bending and shear was always critical. Moreover, the proposed column bases were demonstrated to be structurally efficient attaining moment resistances close to those of the connected sections. In order to examine the structural behaviour of the column base connections, a finite element model was established using shell and spring elements to model the sections and the bolted fastenings respectively. Both material and geometrical non-linearities were incorporated, and comparison between the test and the numerical results was presented in details. The design rules originally developed for bolted moment connections between lapped Z sections were adopted and re-formulated for the design of column base connections after careful calibration against the test data. Comparison on co-existing moments and shear forces at the critical cross-sections of the column bases was fully presented. It was shown that the proposed design and analysis method was structurally adequate to predict the failure loads under combined bending and shear for column bases with similar connection configurations.

Structural performance of cold-formed steel column bases with bolted moment connections

  • Chung, K.F.;Yu, W.K.;Wang, A.J.
    • Steel and Composite Structures
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    • v.5 no.4
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    • pp.289-304
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    • 2005
  • This paper presents a thorough investigation into the structural performance of cold-formed steel column bases using double lipped C sections with bolted moment connections. A total of four column base tests with different connection configurations were carried out, and it was found that section failure under combined bending and shear was always critical. Moreover, the proposed column bases were demonstrated to be structurally efficient attaining moment resistances close to those of the connected sections. In order to examine the structural behaviour of the column base connections, a finite element model was established using shell and spring elements to model the sections and the bolted fastenings respectively. Both material and geometrical non-linearities were incorporated, and comparison between the test and the numerical results was presented in details. The design rules originally developed for bolted moment connections between lapped Z sections were adopted and re-formulated for the design of column base connections after careful calibration against the test data. Comparison on co-existing moments and shear forces at the critical cross-sections of the column bases was fully presented. It was shown that the proposed design and analysis method was structurally adequate to predict the failure loads under combined bending and shear for column bases with similar connection configurations.

Three dimensional deformation of dry-stored complete denture base at room temperature

  • Lim, Seo-Ryeon;Lee, Joon-Seok
    • The Journal of Advanced Prosthodontics
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    • v.8 no.4
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    • pp.296-303
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    • 2016
  • PURPOSE. The aim of this study was to evaluate whether there is any typical deformation pattern existing in complete denture when it was dried by using the 3D scanner and surface matching program. MATERIALS AND METHODS. A total of 28 denture bases were fabricated with heat curing acrylic resin (each 14 upper and lower denture bases), and 14 denture bases (each 7 upper and lower denture bases) were stored in the water bottle (water stored), and another 14 denture bases were stored in the air (dry stored). Each specimen was scanned at $1^{st}$ day after deflasking, $14^{th}$ day after deflasking, and $28^{th}$ day after deflasking, and digitalized. Three dimensional deformation patterns were acquired by comparison of the data within storage group using surface matching program. For evaluating differences between groups, these data were compared statisticallyusing Kruskal Wallis and Mann Whitney-U test (${\alpha}$=.05). RESULTS. When evaluating 3D deformation of denture base, obvious deformations were not found in maxillary and mandibular water storage group. However, in dry stored group, typical deformation pattern was detected as storage time passes. It occurred mostly in first two weeks. Major deformations were found in the bilateral posterior area in both maxillary and mandibular group. In maxillary dry stored group, a statistical significance was found. CONCLUSION. It was proved that in both upper and lower denture bases, dry storage caused more dimensional deformation than water storage with typical pattern.